US3899828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Utility blade holder
Assignee: Individual
•
Filing: 1974-01-02
•
Granted: 1975-08-19
•
Expires: 1994-01-02
Abstract
Abstract This invention relates to Utility Blade Holders, and more particularly it relates to such devices which may be formed to hold and to support safely a standard type shaving blade of conventional manufacture (double edge) and in such a manner as to permit the user to hold the blade by his fingers and to hold it securely and safely so as to permit the utilization of the blade to cut paper, cardboard, lether and other materials. Also the blade thus supported may be used as a scraping device. The device in question will also provide for a sturdy frame support, preferably made of light aluminum or light brass base, so formed and provided with appropriate protrusions which will permit the support of the blade in just the right position in the device and will prevent it from moving. The device also will provide a means for enclosing and covering the sharp edge of the blade when the latter is not used. A modification thereof will also provide for the utilization of a sliding plate which will be allowed to slide below the sharp edge of the blade to cover the edge when the device is not used, thus making double-sure that the user may not accidentally cut his finger, which may otherwise occur if the sharp edge of the blade is not appropriately protected.
Inventors
- 👤 Joseph Bosco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:04
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/40
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
204 words
In a device to be used as a cutting tool, comprising, in combination, a vertical flat wall, and means to support a razor blade against said flat wall, a blade having cutting edge, said supporting means including a pair of inverted vertical extensions mounted on either side of said flat wall and extending beyond said wall, said extensions formed in such a manner as to hold and to support securily said razor blade against said flat wall; and including an elongated bar, said bar having a pair of grooves running the entire length of said bar, one groove in said pair located over the other groove and running parallel to the first groove, by means of the first groove said bar being mounted over the cutting edge of said blade for safety purposes when said device is not being utilized as a cutting tool, the other groove in said pair having a tapered cross-section, said bar being removed from the cutting edge of said blade to expose said cutting edge when said device is being utilized as, a cutting tool, said bar, by means of said tapered groove being anchored stationary to said device away from the cutting edge of the razor blade aforesaid.
Claim 2
Dependent Claim
204 words
In a device to be used as a cutting tool, comprising, in combination, a vertical flat wall, and means to support a razor blade against said flat wall, a blade having cutting edge, said supporting means including a pair of inverted vertical extensions mounted on either side of said flat wall and extending beyond said wall, said extensions formed in such a manner as to hold and to support securily said razor blade against said flat wall; and including an elongated bar, said bar having a pair of grooves running the entire length of said bar, one groove in said pair located over the other groove and running parallel to the first groove, by means of the first groove said bar being mounted over the cutting edge of said blade for safety purposes when said device is not being utilized as a cutting tool, the other groove in said pair having a tapered cross-section, said bar being removed from the cutting edge of said blade to expose said cutting edge when said device is being utilized as, a cutting tool, said bar, by means of said tapered groove being anchored stationary to said device away from the cutting edge of the razor blade aforesaid.
Claim 3
Dependent Claim
302 words
In a device of the class described to be used as a cutting tool, comprising, in combination, a vertical flat wall, and means to support a razor blade against said wall, a blade having cutting edge, said supporting means including a pair of inverted vertical extensions mounted on either side of said flat wall and extending slightly beyond said wall, said extensions formed to saddle over the ends of said razor blade and to hold said blade flat securily against said wall; and a secondary superimposed flat wall included having a finger lift, said secondary wall being movable up and down, one of said inverted vertical extensions located at one end of said superimposed secondary wall and the other at the opposite end, each of said extensions forming means to hold said member in a vertical position but permitting said member to slide, said member by means of the aforesaid finger lift being manually moved downwardly to cover the exposed cutting edge of said blade, and when moved upwardly to expose the cutting edge of said blade; said secondary wall having a pair of lateral extensions, one extension located on one end, and the other extension located in the apposite end of said secondary wall, said extensions cooperating with the inverted extensions aforesaid being fitted to slide freely up and down in said inverted extensions and permitting the secondary wall to be moved up and down; and locking means provided to hold the secondary wall in raised or in lowered position, said means comprising a raised portion in each of said lateral extensions, and a dimple in each inverted extension, each raised portion being located in a vertical line with each dimple in each inverted extension to form a lock to hold said secondary wall in its relative up and down position.
Claim 4
Dependent Claim
302 words
In a device of the class described to be used as a cutting tool, comprising, in combination, a vertical flat wall, and means to support a razor blade against said wall, a blade having cutting edge, said supporting means including a pair of inverted vertical extensions mounted on either side of said flat wall and extending slightly beyond said wall, said extensions formed to saddle over the ends of said razor blade and to hold said blade flat securily against said wall; and a secondary superimposed flat wall included having a finger lift, said secondary wall being movable up and down, one of said inverted vertical extensions located at one end of said superimposed secondary wall and the other at the opposite end, each of said extensions forming means to hold said member in a vertical position but permitting said member to slide, said member by means of the aforesaid finger lift being manually moved downwardly to cover the exposed cutting edge of said blade, and when moved upwardly to expose the cutting edge of said blade; said secondary wall having a pair of lateral extensions, one extension located on one end, and the other extension located in the apposite end of said secondary wall, said extensions cooperating with the inverted extensions aforesaid being fitted to slide freely up and down in said inverted extensions and permitting the secondary wall to be moved up and down; and locking means provided to hold the secondary wall in raised or in lowered position, said means comprising a raised portion in each of said lateral extensions, and a dimple in each inverted extension, each raised portion being located in a vertical line with each dimple in each inverted extension to form a lock to hold said secondary wall in its relative up and down position.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |